Solutions by everydaycalculation.com
This multiplication involving fractions can also be rephrased as "What is 21/84 of 10/21?"
2184 × 1021 is 542.
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 42/84×10/21 21/84×20/21 21/84×10/42 63/84×10/21 21/84×30/21 21/84×10/63 21/84×50/21 21/84×70/21
© everydaycalculation.com